.chatheader{
  height: 40px;
  line-height: 40px;
  background: #fff;
  border-radius: 10px 0 0 0;
  box-shadow: 1px 1px 5px #aaa;
  span{
    padding-left: 20px ;
    font-size: 20px;
    letter-spacing: 1px;
    font-weight: 600;
    color: #333;
  }
}